You can find it on Route 3, about 10% of the time.
route 3or4
Breed Jigglypuff/Wigglytuff
You can breed jigglypuff or wigglytuff to get it.
Use a moon stone on it.
Clefairy, Jigglypuff. Umbreon. etc.
Yes.
Clefairy, Jigglypuff, Nidorina, Nidorino
It evolves jigglypuff, clefairy, nidorino, nidorina and skitty.
There are a few Jigglypuff in Route 3.
Catch a Jigglypuff and a Ditto or catch both male and female Jigglypuff and bring them to the fourth island in the Sevii archipelago. You'll find a day-care center there. Of course, you'll need to complete the Elite four challenge before getting there.
jigglypuff in Pokemon firered.mont moon and near mount moon
Route 115